U.S. patent application number 11/752935 was filed with the patent office on 2008-04-03 for electronic device with emi shielding assembly.
This patent application is currently assigned to HON HAI PRECISION INDUSTRY CO., LTD.. Invention is credited to ZHENG-HENG SUN.
Application Number | 20080080159 11/752935 |
Document ID | / |
Family ID | 38969026 |
Filed Date | 2008-04-03 |
United States Patent
Application |
20080080159 |
Kind Code |
A1 |
SUN; ZHENG-HENG |
April 3, 2008 |
ELECTRONIC DEVICE WITH EMI SHIELDING ASSEMBLY
Abstract
An EMI shielding assembly includes a bracket and a resilient
shield. The bracket includes a top wall, a bottom wall, and a pair
of sidewalls connected between the top wall and the bottom wall. A
first and second opening are defined at opposite sides of the
bracket and surrounded by the walls. Two face-to-face L-shaped
plates extend from the pair of sidewalls respectively at the second
opening. The shield is mounted between the L-shaped plates and
covering the second opening.
Inventors: |
SUN; ZHENG-HENG; (Tu-Cheng,
TW) |
Correspondence
Address: |
PCE INDUSTRY, INC.;ATT. CHENG-JU CHIANG JEFFREY T. KNAPP
458 E. LAMBERT ROAD
FULLERTON
CA
92835
US
|
Assignee: |
HON HAI PRECISION INDUSTRY CO.,
LTD.
Tu-Cheng
TW
|
Family ID: |
38969026 |
Appl. No.: |
11/752935 |
Filed: |
May 24, 2007 |
Current U.S.
Class: |
361/818 |
Current CPC
Class: |
G06F 1/182 20130101;
H01R 13/6592 20130101; H01R 13/6583 20130101; H05K 9/0018 20130101;
H01R 2201/06 20130101 |
Class at
Publication: |
361/818 |
International
Class: |
H05K 9/00 20060101
H05K009/00 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 28, 2006 |
CN |
200620200807.0 |
Claims
1. An EMI shielding assembly comprising: a bracket including a top
wall, a bottom wall, and a pair of side walls connected between the
top wall and the bottom wall, first and second openings being
defined at opposite sides of the bracket and being surrounded by
the walls, two face-to-face L-shaped plates extending from the pair
of sidewalls respectively at the second opening; and a resilient
shield mounted between the L-shaped plates and covering the second
opening.
2. The EMI shielding assembly as claimed in claim 1, wherein a
space is formed among the top wall, the bottom wall, and the pair
of sidewalls, the space communicating the first opening with the
second opening.
3. The EMI shielding assembly as claimed in claim 1, wherein the
top wall, the bottom wall, and the pair of sidewalls include a
plurality of aligned protruding portions, and aligned convex
portions offset from but parallel to the protruding portions, near
the first opening.
4. The EMI shielding assembly as claimed in claim 1, wherein the
shield comprises two sections connected together, and each section
is generally V-shaped.
5. The EMI shielding assembly as claimed in claim 1, wherein the
shield defines a plurality of transverse resilient fingers thereof,
and a slit being defined between each two adjacent fingers.
6. A computer with an EMI shielding assembly comprising: a bracket
defining first and second openings at opposite sides thereof
respectively, two face-to-face L-shaped plates extending from the
bracket respectively at the second opening, a shield mounted
between the L-shaped plates and covering and shielding the second
opening of the bracket; and an enclosure comprising a plate
defining an opening and a circuit board having a plurality of
electronic components communicating with the opening, the bracket
detachably secured to the enclosure, with the first opening of the
bracket aligning and facing the opening of the enclosure whereby
the shield shields the opening of the enclosure.
7. The computer as claimed in claim 6, wherein the bracket is
cubic, and comprises a top wall, a bottom wall, and a pair of
sidewalls.
8. The EMI shielding assembly as claimed in claim 7, wherein the
two face-to-face L-shaped plates extend from the pair of sidewalls
respectively at the second opening.
9. The EMI shielding assembly as claimed in claim 7, wherein the
top wall, the bottom wall, and the pair of sidewalls include a
plurality of aligned protruding portions, and aligned convex
portions offset from but parallel to the protruding portions, near
the first opening, the protruding portions abutting against an
outer surface of the sidewall of the enclosure and the convex
portion sliding into the opening of the enclosure and abutting
against an inner surface of the sidewall, thereby sandwiching the
edges of the sidewall of the enclosure at the opening between the
protruding portions and the convex portions.
10. The EMI shielding assembly as claimed in claim 6, wherein the
shield includes two sections, and each section is generally
V-shaped.
11. The EMI shielding assembly as claimed in claim 6, wherein the
shield comprises a plurality of transverse resilient fingers, and a
slit is defined between each two adjacent fingers.
12. A computer comprising: an enclosure comprising a sidewall
defining an opening, and a circuit board having a plurality of
connectors communicating with the opening, a plurality of cables
connected to the connectors; a bracket comprising a plurality of
walls connected with each other to surround a space therebetween,
the space comprising two opposite openings communicating with each
other, a plurality of aligned protruding portions and aligned
convex portions offset from but parallel to the protruding portions
being formed at the walls, the bracket being attached to the
opening of the enclosure via the protruding portions and the convex
portions sandwiching an edge of the sidewall at the opening; and a
shield mounted to the bracket and covering the second opening to
thereby shield the opening of the enclosure, the cables extending
through the space and the shield.
13. The computer as claimed in claim 12, wherein the shield is made
of elastic material and comprises a plurality of fingers and a
plurality of slits respectively defined between adjacent fingers,
and the cables extends through the respective slits via elastically
deforming the corresponding fingers.
14. The computer as claimed in claim 12, wherein the bracket
further comprises a pair of L-shaped plates formed at the second
opening, the shield being compressed between the two L-shaped
plates.
15. The computer as claimed in claim 14, wherein the shield
comprises a pair of V-shaped sections connected together.
16. The computer as claimed in claim 12, wherein the convex
portions are global-shaped projections formed at outer faces of the
walls and abut an inner face of the edge of the sidewall of the
enclosure, and the protruding portions are bridges protruding out
from the outer faces of the walls and abut an outer face of the
sidewall of the enclosure.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to electronic devices, and
particularly to an electronic device having an EMI shielding
assembly.
[0003] 2. Description of Related Art
[0004] In the enclosure of a typical electronic device, there are
generally many kinds of electronic components such as central
processing units (CPUs) and accelerated chips mounted in a circuit
board of the enclosure. The electronic components may emit
electromagnetic radiation during operation causing electromagnetic
interference (EMI). The EMI may influence other components mounted
in the enclosure and may even lead to abnormal operation of those
components.
[0005] Referring to FIG. 5, a typical electronic device such as a
personal computer includes an enclosure 10, a circuit board 12, and
an EMI shield 16. The enclosure 10 defines an opening in a sidewall
thereof. The circuit board 12 includes a plurality of input/output
(I/O) connectors 14. The I/O connectors 14 are mounted to a side of
the circuit board 12 facing the sidewall of the enclosure 10. The
EMI shield 16 is mounted to the circuit board 12 by fixing means,
such as welding, screws, and so on. If an I/O connector 14 in the
circuit board 12 needs to be replaced, the EMI shield 16 should be
removed from the circuit board 12. However, the EMI shield 16 is
not easily removed from the circuit board 12. The circuit board 12
may be damaged during removal and/or reinstallation of the EMI
shield 16.
[0006] What is needed is to provide an EMI shielding assembly which
is easily removed from a circuit board thereof.
SUMMARY OF THE INVENTION
[0007] An EMI shielding assembly includes a bracket, and a
resilient shield. The bracket includes a top wall, a bottom wall,
and a pair of sidewalls connected between the top wall and the
bottom wall. A first opening and a second opening are defined at
opposite sides of the bracket and surrounded by the walls. Two
face-to-face L-shaped plates extend from the pair of sidewalls
respectively at the second opening. The shield is mounted between
the L-shaped plates and covering the second opening.
[0008] Other advantages and novel features of the invention will
become more apparent from the following detailed description when
taken in conjunction with the accompanying drawings, in which:
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] FIG. 1 is an assembled, isometric view of an enclosure with
an EMI shielding assembly in accordance with a preferred embodiment
of the present invention;
[0010] FIG. 2 is an exploded, isometric view of FIG. 1;
[0011] FIG. 3 is an isometric view of the EMI shielding assembly of
FIG. 2;
[0012] FIG. 4 is an exploded, isometric view of FIG. 3;
[0013] FIG. 5 is an isometric view of a typical enclosure with an
EMI shield.
DETAILED DESCRIPTION OF THE INVENTION
[0014] Referring to FIG. 1 and FIG. 2, an electronic device such as
a personal computer in accordance with a preferred embodiment of
the present invention includes an enclosure 20, a circuit board 22,
and an EMI shielding assembly 26.
[0015] The enclosure 20 defines an opening 21 in a sidewall 23
thereof.
[0016] The circuit board 22 includes a plurality of input/output
(I/O) connectors 24.
[0017] The I/O connectors 24 are mounted to a side of the circuit
board 22 facing the sidewall 23 of the enclosure 20.
[0018] Referring also to FIG. 3 and FIG. 4, the EMI shielding
assembly 26 includes a bracket 262 and a shield 264. The bracket
262 is made of resilient metal for shielding electromagnetic
radiation. The bracket 262 is cubic, and includes a top wall 270, a
bottom wall 271, and a pair of sidewalls 272. The bracket 262 is
sized so that it will just fit into the opening 21 of the enclosure
20. A space is formed among the top wall 270, the bottom wall 271,
and the pair of sidewalls 272. A first opening (not labeled) and a
second opening 273 are defined at opposite front and rear sides of
the bracket 262 respectively. The top wall 270, the bottom wall
271, and the pair of sidewalls 272 of the bracket 262 include a
plurality of aligned elastic protruding portions 266, and aligned
convex portions 268 offset from but parallel to the protruding
portions 266, near the first opening. The protruding portions 266
are protruding bridges, and the convex portions 268 are global
protrusions. The two alignments of the protruding portions 266 and
the convex portions 268 are perpendicular to connecting edges of
the top walls 270, and the sidewalls 272, and offset from each
other just enough to allow edges of the sidewall of the enclosure
20 at the opening 21 to be sandwiched therebetween when the bracket
262 of the EMI shielding assembly 26 is fit into the opening 21.
Two face-to-face L-shaped plates 274 extend from the pair of
sidewalls 272 respectively at the second opening 273.
[0019] The shield 264 comprises two sections connected together.
Each section is generally V-shaped, and is made of an elastic
material. The shield 264 comprises a plurality of transverse
resilient fingers 2642. A slit 2644 is defined between adjacent
sides of each two adjacent fingers 2642 configured for allowing
cable ends to pass therethrough. The shield 264 is mounted between
the L-shaped plates 274, thus covering and shielding the second
opening 273 of the bracket 262.
[0020] Referring to FIG. 1 and FIG. 2 again, in assembly, two
cables 28 connectable to peripheral devices pass through two slits
2644 between resilient fingers of the shield 264 and plug into two
I/O connectors 24 of the circuit board 22. Then the EMI shielding
assembly 26 is manually inserted into the opening 21 of the
enclosure 20. As the EMI shielding assembly 26 is inserted into the
opening 21, areas of assembly 26 where the convex portions 268 are
located, flex in then rebound after reaching an inside space of the
enclosure 20. At this time, the protruding portions 266 abut
against an outer surface of the sidewall of the enclosure 20,
thereby sandwiching the edges of the sidewall of the enclosure 20
at the opening 21 between the protruding portions 266 and the
convex portions 268. The bracket 262 is thus tightly secured to the
enclosure 20, with the first opening of the bracket 262 facing to
the opening 21, so that the bracket 262 may shield the opening 21
of the enclosure 20. The I/O connectors 24 of the circuit board 22
are accommodated in the space of the bracket 262. If an I/O
connector 24 in the circuit board 22 needs to be replaced, the EMI
shielding assembly 26 can be removed by manually grasping the
assembly 26 and pulling it away from the sidewall 23 of the
enclosure 20. Therefore, the EMI shielding assembly 26 is easily
removed from the circuit board 22, preventing damage to the circuit
board 22 during removal and/or reinstallation of the EMI shielding
assembly 26.
[0021] It is believed that the present embodiment and its
advantages will be understood from the foregoing description, and
it will be apparent that various changes may be made thereto
without departing from the spirit and scope of the invention or
sacrificing all of its material advantages, the examples
hereinbefore described merely being preferred or exemplary
embodiments.
* * * * *